Audio buzzing when phone is under load

ShadySocks · May 3, 2019

I have a moto z play, and I just got new headphones which I love, except when I do anything heavy on my phone, the audio starts buzzing. Is there an easy way to fix this, or do I just need less sensitive headphones? Could I just put a resistor in the ground cable?

Thanks

Lord Mirdalan · May 3, 2019

Not sure what your problem is... But adding a resistor won't help.

Headphones will have 2 wires, one apiece for left & right. Sometimes, the wires will act as antennas and pick up electrical interference from other devices - try taking warm clothes out of a dryer and brushing the cable against them.

I would try different headphones, and a different audio source, to narrow down the source of the problem.

ShadySocks · May 3, 2019

18 minutes ago, Lord Mirdalan said:

Not sure what your problem is... But adding a resistor won't help.

Headphones will have 2 wires, one apiece for left & right. Sometimes, the wires will act as antennas and pick up electrical interference from other devices - try taking warm clothes out of a dryer and brushing the cable against them.

I would try different headphones, and a different audio source, to narrow down the source of the problem.

It's very specific to buzzing under load like playing games. Adding a resistor will (i think) increase the impedance of the headphones, hopefully lowering the noise floor to where I can't hear the buzzing.

Lord Mirdalan · May 3, 2019

It won't change the impedence of the drivers themselves, or their characteristics. It will simply place a larger load on the DAC in your phone. I don't think it will hurt anything, it will just lower the volume.

ShadySocks · May 7, 2019

On 5/3/2019 at 1:32 PM, Lord Mirdalan said:

It won't change the impedence of the drivers themselves, or their characteristics. It will simply place a larger load on the DAC in your phone. I don't think it will hurt anything, it will just lower the volume.